Was born, Nothing interesting happened until age 12 when he ran away after finding out his father wasn't his father, after he turned 13 and his powers manifested he didn't return home for fear of being branded a freak. He tried not to use his powers but eventually became more and more reliant on them, despite being unable to use them for extended periods of time.
At age 22 Robert brought a man who had jumped off a building to a hospital where he met Gabriel, unaware Robert had attracted the attention of Sylar when he accidentally used a power. Sylar followed him and on the street began to fight him for his ability, Robert was going to lose when he was assisted by Rhia Jones and Gabriel. With their help he defeated Sylar. Robert found out about the Company and began to break into their bases, when he found out about the virus he tried to get it but failed, after retreating he was once again attacked by Sylar, which made Robert accidentally Time Travel to 1671, Where he met Hiro Nakamura and Takezo Kensei (Adam) Where he helped with Hiro's quest to make Kensei a Hiro, in return Hiro Taught Robert the ways of the Samurai (including how to use a sword), How to use his powers, How to become a Hiro and Japanese.
When Adam saw Hiro kiss Yaeko, Kensei knocked out Hiro and Robert and Drugged them, this caused Robert to teleport back to the future, where, still high on Opium, he met Elle Bishop and tried to help her Capture Peter Petrelli and Rhia, after failing to do this Elle captured Robert. Robert awoke in a Company Van getting transported to another facility, he broke out and teleported to Tokyo, while walking down the street Hiro teleported to Robert and returned his sword from 1671.
Robert teleported back to the company base where he was re-captured and in his escape attempt he released Sylar who after failing to kill Robert and Elle went to get Claire Bennet, after successfully taking her power Robert arrived and the two fought, Robert eventually winning, he brought back Sylar and locked him up. Elle helped to clean up all the blood and started to teach him to use her power, after that they had sex.
After Robert woke up he received a Vision about the Virus and deciding he would need the Power to heal people and visited Jeremy Greer and got his power. After that was the day that the Virus was released, Robert arrived at the Company base after Hiro had been knocked out, after healing him he teleported to the vault where Peter had already opened it, after fighting Peter for a bit a lot of other people arrived, all of them failed to prevent the release of the Virus.
After the Virus was release Robert was Quarantined in Odessa trying to heal everyone, but his regenerative blood failed to do anything, sometime in the chaos all the Company Prisoners were released, Sylar amongst them, Robert fought Sylar an defeated him, but was unable to re-capture him, eventually he enlisted the aid of another 4 Level 5 prisoners to help him capture Sylar, but Sylar defeated them and took most of their powers.
After getting radiated by Peter, Robert left Odessa and went to Elle, after Valentines day Robert got dumped
after deciding that he didn't want to remember her to prevent himself becoming like Adam he went to The Haitian and had his memories removed then returned to Odessa, after a couple of days of feeling lonely and depressed he eventually attempted Suicide but failed due to Regeneration.
After Rhia told him that he had something to live for but was unable to tell him Robert gave up trying to kill himself, after staying in Odessa for a while he decided to leave and get an apartment in NY.